Which one of the following conditions must hold for a sequence to be a geometric…

MATHEMATICS · Single correct · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

Which one of the following conditions must hold for a sequence

\{a_n\}

to be a geometric progression? (a)

a_{n+1}-a_n

is constant for every

n

(b)

\dfrac{a_{n+1}-a_n}{a_{n}}

is constant for every

n

(c)

\dfrac{a_{n+1}}{a_n}

is constant for every

n

(d)

a_{n+1}+a_n

is constant for every

n